Ecological Archives E091-194-A1

N. A. Soudzilovskaia, J. H. C. Cornelissen, H. J. During, R. S. P. van Logtestijn, S. I. Lang, and R. Aerts. 2010. Similar cation exchange capacities among bryophyte species refute a presumed mechanism of peatland acidification. Ecology. 20:2716–2726.

Appendix A. Ionic composition of sprays used in the acidification experiment.

TABLE A1. R – water with ionic composition mimicking rain water in the area, prepared following the data of Malmer and Nilgård (1980). F+R – a mixture (1:20) of rich fen soil solution collected in the field and the rain water, prepared as described above. Necessary concentrations of ions in the rain water were obtained by dissolving 18.9 μg/L MnSO4*4H2O, 100 μg/L ZnSO4*7 H2O, 389μg/L FeSO4*7 H2O, 0.422 μl/L H2SO4, 0.520 μl/L HNO3, 177 μg/L CaCl2, 34.6 μg/L K2HP O4, 284.2 μg/L Na2SO4, 194.1 μg/L MgSO4*6 H2O, 14.9 μg/L KCl, 87.1 μg/L K2SO4, and 343.5 μg/L (NH4) 2SO4. Ionic composition of the F+R mixture was measured by atomic absorption spectrometry method. Concentrations of mineral elements are expressed as μMol/L.

 

pH

Na+

K+

Mg2+

Ca2+

Mn2+

Fe2+

Zn2+

NH4+

NO3-

Cl-

(SO4)2-

(PO4)3-

R

5.1

4

1.6

0.85

1.6

0.15

1.4

0.35

8.5

7.8

3.7

15.3

0.2

F+R

6.7

5

72.5

44

93

3.8

0.35

0.7

 

 

 

 

 

 

LITERATURE CITED

Malmer, N., and M. Nilgård. 1980. Supply and transport of mineral nutrients in a sub-arctic mire. In M. Sonesson, editor. Ecology of a Subarctic Mire. Ecological Bulletin 30:63–95.
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